Postgresql 1.10.5调度程序与postgres的连接错误

气流1.10.5 芹菜执行者

气流计划程序因postgres sqlalchemy连接错误而崩溃（下面是错误的详细信息）此错误存在于一个环境中，其他类似的环境可以工作。是否存在版本不兼容问题，请帮助解决

为了隔离问题，手动测试与postgres的连接不会出现问题

连接代码示例（sqlalchemy postgres功能）

错误

Celery Task ID: ('example_dag', 'bash_task', datetime.datetime(2018, 10, 8, 0, 0, tzinfo=<TimezoneInfo [UTC, GMT, +00:00:00, STD]>), 1)
Traceback (most recent call last):
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 2275, in _wrap_pool_connect
    return fn()
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 363, in connect
    return _ConnectionFairy._checkout(self)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 760, in _checkout
    fairy = _ConnectionRecord.checkout(pool)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 492, in checkout
    rec = pool._do_get()
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/impl.py", line 139, in _do_get
    self._dec_overflow()
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/util/langhelpers.py", line 68, in __exit__
    compat.reraise(exc_type, exc_value, exc_tb)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/util/compat.py", line 153, in reraise
    raise value
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/impl.py", line 136, in _do_get
    return self._create_connection()
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 308, in _create_connection
    return _ConnectionRecord(self)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 437, in __init__
    self.__connect(first_connect_check=True)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 639, in __connect
    connection = pool._invoke_creator(self)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/engine/strategies.py", line 114, in connect
    return dialect.connect(*cargs, **cparams)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/engine/default.py", line 453, in connect
    return self.dbapi.connect(*cargs, **cparams)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/psycopg2/__init__.py", line 126, in connect
    conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
psycopg2.OperationalError: could not connect to server: No such file or directory
    Is the server running locally and accepting
    connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?


The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/airflow/executors/celery_executor.py", line 106, in fetch_celery_task_state
    res = (celery_task[0], celery_task[1].state)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/celery/result.py", line 473, in state
    return self._get_task_meta()['status']
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/celery/result.py", line 412, in _get_task_meta
    return self._maybe_set_cache(self.backend.get_task_meta(self.id))
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/celery/backends/base.py", line 386, in get_task_meta
    meta = self._get_task_meta_for(task_id)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/celery/backends/database/__init__.py", line 53, in _inner
    return fun(*args, **kwargs)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/celery/backends/database/__init__.py", line 122, in _get_task_meta_for
    session = self.ResultSession()
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/celery/backends/database/__init__.py", line 99, in ResultSession
    **self.engine_options)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/celery/backends/database/session.py", line 59, in session_factory
    self.prepare_models(engine)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/celery/backends/database/session.py", line 54, in prepare_models
    ResultModelBase.metadata.create_all(engine)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/sql/schema.py", line 4294, in create_all
    ddl.SchemaGenerator, self, checkfirst=checkfirst, tables=tables
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 2045, in _run_visitor
    with self._optional_conn_ctx_manager(connection) as conn:
  File "/usr/lib64/python3.6/contextlib.py", line 81, in __enter__
    return next(self.gen)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 2037, in _optional_conn_ctx_manager
    with self._contextual_connect() as conn:
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 2239, in _contextual_connect
    self._wrap_pool_connect(self.pool.connect, None),
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 2279, in _wrap_pool_connect
    e, dialect, self
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 1544, in _handle_dbapi_exception_noconnection
    util.raise_from_cause(sqlalchemy_exception, exc_info)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/util/compat.py", line 398, in raise_from_cause
    reraise(type(exception), exception, tb=exc_tb, cause=cause)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/util/compat.py", line 152, in reraise
    raise value.with_traceback(tb)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 2275, in _wrap_pool_connect
    return fn()
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 363, in connect
    return _ConnectionFairy._checkout(self)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 760, in _checkout
    fairy = _ConnectionRecord.checkout(pool)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 492, in checkout
    rec = pool._do_get()
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/impl.py", line 139, in _do_get
    self._dec_overflow()
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/util/langhelpers.py", line 68, in __exit__
    compat.reraise(exc_type, exc_value, exc_tb)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/util/compat.py", line 153, in reraise
    raise value
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/impl.py", line 136, in _do_get
    return self._create_connection()
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 308, in _create_connection
    return _ConnectionRecord(self)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 437, in __init__
    self.__connect(first_connect_check=True)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 639, in __connect
    connection = pool._invoke_creator(self)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/engine/strategies.py", line 114, in connect
    return dialect.connect(*cargs, **cparams)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/engine/default.py", line 453, in connect
    return self.dbapi.connect(*cargs, **cparams)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/psycopg2/__init__.py", line 126, in connect
    conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
sqlalchemy.exc.OperationalError: (psycopg2.OperationalError) could not connect to server: No such file or directory
    Is the server running locally and accepting
    connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?

(Background on this error at: http://sqlalche.me/e/e3q8)

西芹任务ID:（'example_dag'，'bash_Task'，datetime.datetime（2018,10,8,0,0，tzinfo=），1） 回溯（最近一次呼叫最后一次）： 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/sqlalchemy/engine/base.py”，第2275行，在“包装”池中 返回fn（） 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/sqlalchemy/pool/base.py”，第363行，在connect中 返回\u连接\u签出（自我） 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/sqlalchemy/pool/base.py”，第760行，in\u签出 fairy=\u ConnectionRecord.checkout（池） 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/sqlalchemy/pool/base.py”，第492行，在签出中 rec=pool.\u do\u get（） 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/sqlalchemy/pool/impl.py”，第139行，在 self._dec_overflow（） 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/sqlalchemy/util/langhelpers.py”，第68行，在u\u出口处__ 兼容性（exc_类型、exc_值、exc_tb） 文件“/kaiser2/afflow\u venv/lib64/python3.6/site-packages/sqlalchemy/util/compat.py”，第153行，重新登录 增值 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/sqlalchemy/pool/impl.py”，第136行，在 返回self.\u创建\u连接（） 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/sqlalchemy/pool/base.py”，第308行，在创建连接中 返回连接记录（自身） 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/sqlalchemy/pool/base.py”，第437行，在__ 自我连接（第一次连接检查=真） 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/sqlalchemy/pool/base.py”，第639行，在uu connect中 连接=池。\u调用\u创建者（自身） 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/sqlalchemy/engine/strategies.py”，第114行，在connect中 返回方言。连接（*cargs，**cparams） 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/sqlalchemy/engine/default.py”，第453行，在connect中 返回self.dbapi.connect（*cargs，**cparams） 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/psycopg2/\uuuuuu init\uuuuuu.py”，第126行，在connect中 连接=连接（dsn，连接工厂=连接工厂，**kwasync） psycopg2.OperationalError:无法连接到服务器：没有此类文件或目录 服务器是否在本地运行并接受 Unix域套接字上的连接“/var/run/postgresql/.s.PGSQL.5432”？ 上述异常是以下异常的直接原因： 回溯（最近一次呼叫最后一次）： 文件“/kaiser2/airflow\u venv/lib64/python3.6/site packages/airflow/executors/celery\u executor.py”，第106行，处于提取芹菜任务状态 res=（芹菜任务[0]，芹菜任务[1]。状态） 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/芹菜/result.py”，第473行，处于状态 返回self.\u获取任务\u meta（）['status'] 文件“/kaiser2/aifflow\u venv/lib64/python3.6/site packages/芹菜/result.py”，第412行，在“获取任务”meta中 返回self.\u可能\u设置\u缓存（self.backend.get\u任务\u元（self.id）） 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/芹菜/backends/base.py”，第386行，在get\u task\u meta中 meta=self.\u获取任务的meta（任务id） 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/cellery/backends/database/_init___;.py”，第53行，在 返回乐趣（*args，**kwargs） 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/芹菜/backends/database/_init\u_uuuu.py”，第122行，位于 session=self.ResultSession（） ResultSession中第99行的文件“/kaiser2/airflow\u venv/lib64/python3.6/site packages/芹菜/backends/database/_init__u;.py” **自选引擎（可选） 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/芹菜/backends/database/session.py”，第59行，会话工厂中 自行准备发动机型号（发动机） 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/芹菜/backends/database/session.py”，第54行，在prepare\u models中 ResultModelBase.metadata.create_all（引擎） 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/sqlalchemy/sql/schema.py”，第4294行，位于create\u all中 ddl.SchemaGenerator，self，checkfirst=checkfirst，tables=tables 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/sqlalchemy/engine/base.py”，第2045行，在“运行”中 使用self.\u可选\u连接\u ctx\u管理器（连接）作为连接： 文件“/usr/lib64/python3.6/contextlib.py”，第81行，输入__ 返回下一个（self.gen） 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/sqlalchemy/engine/base.py”，第2037行，位于可选连接ctx管理器中 使用self.\u context\u connect（）作为连接： 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/sqlalchemy/engine/base.py”，第2239行，在上下文连接中 self.\u wrap\u pool\u connect（self.pool.connect，无）， 文件“/kaiser2/afflow\u venv/lib64/python3.6/site packages/sqlalchemy/engine/base.py”，第2279行，在“包装”池中 e、 方言 文件“/kaiser2/avirflow\u venv/lib64/python3.6/site packages/sqlalchemy/engine/base.py”，第1544行，在“handle\u dbapi\u exception\u noconnection”中 util.raise\u from\u cause（sqlalchemy\u异常，exc\u信息） 文件“/kaiser2/afflow\u-venv/lib64/python3.6/site-packages/sqlalchemy/util/compat.py”，第398行，源于 重新释放（类型（异常），异常，tb=exc\U tb，原因=原因） 文件“/kaiser2/afflow\u venv/lib64/python3.6/site-packages/sqlalchemy/util/compat.py”，第152行，重新登录 用_trac提升值

Celery Task ID: ('example_dag', 'bash_task', datetime.datetime(2018, 10, 8, 0, 0, tzinfo=<TimezoneInfo [UTC, GMT, +00:00:00, STD]>), 1)
Traceback (most recent call last):
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 2275, in _wrap_pool_connect
    return fn()
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 363, in connect
    return _ConnectionFairy._checkout(self)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 760, in _checkout
    fairy = _ConnectionRecord.checkout(pool)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 492, in checkout
    rec = pool._do_get()
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/impl.py", line 139, in _do_get
    self._dec_overflow()
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/util/langhelpers.py", line 68, in __exit__
    compat.reraise(exc_type, exc_value, exc_tb)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/util/compat.py", line 153, in reraise
    raise value
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/impl.py", line 136, in _do_get
    return self._create_connection()
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 308, in _create_connection
    return _ConnectionRecord(self)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 437, in __init__
    self.__connect(first_connect_check=True)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 639, in __connect
    connection = pool._invoke_creator(self)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/engine/strategies.py", line 114, in connect
    return dialect.connect(*cargs, **cparams)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/engine/default.py", line 453, in connect
    return self.dbapi.connect(*cargs, **cparams)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/psycopg2/__init__.py", line 126, in connect
    conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
psycopg2.OperationalError: could not connect to server: No such file or directory
    Is the server running locally and accepting
    connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?


The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/airflow/executors/celery_executor.py", line 106, in fetch_celery_task_state
    res = (celery_task[0], celery_task[1].state)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/celery/result.py", line 473, in state
    return self._get_task_meta()['status']
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/celery/result.py", line 412, in _get_task_meta
    return self._maybe_set_cache(self.backend.get_task_meta(self.id))
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/celery/backends/base.py", line 386, in get_task_meta
    meta = self._get_task_meta_for(task_id)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/celery/backends/database/__init__.py", line 53, in _inner
    return fun(*args, **kwargs)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/celery/backends/database/__init__.py", line 122, in _get_task_meta_for
    session = self.ResultSession()
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/celery/backends/database/__init__.py", line 99, in ResultSession
    **self.engine_options)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/celery/backends/database/session.py", line 59, in session_factory
    self.prepare_models(engine)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/celery/backends/database/session.py", line 54, in prepare_models
    ResultModelBase.metadata.create_all(engine)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/sql/schema.py", line 4294, in create_all
    ddl.SchemaGenerator, self, checkfirst=checkfirst, tables=tables
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 2045, in _run_visitor
    with self._optional_conn_ctx_manager(connection) as conn:
  File "/usr/lib64/python3.6/contextlib.py", line 81, in __enter__
    return next(self.gen)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 2037, in _optional_conn_ctx_manager
    with self._contextual_connect() as conn:
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 2239, in _contextual_connect
    self._wrap_pool_connect(self.pool.connect, None),
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 2279, in _wrap_pool_connect
    e, dialect, self
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 1544, in _handle_dbapi_exception_noconnection
    util.raise_from_cause(sqlalchemy_exception, exc_info)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/util/compat.py", line 398, in raise_from_cause
    reraise(type(exception), exception, tb=exc_tb, cause=cause)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/util/compat.py", line 152, in reraise
    raise value.with_traceback(tb)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/engine/base.py", line 2275, in _wrap_pool_connect
    return fn()
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 363, in connect
    return _ConnectionFairy._checkout(self)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 760, in _checkout
    fairy = _ConnectionRecord.checkout(pool)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 492, in checkout
    rec = pool._do_get()
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/impl.py", line 139, in _do_get
    self._dec_overflow()
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/util/langhelpers.py", line 68, in __exit__
    compat.reraise(exc_type, exc_value, exc_tb)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/util/compat.py", line 153, in reraise
    raise value
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/impl.py", line 136, in _do_get
    return self._create_connection()
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 308, in _create_connection
    return _ConnectionRecord(self)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 437, in __init__
    self.__connect(first_connect_check=True)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/pool/base.py", line 639, in __connect
    connection = pool._invoke_creator(self)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/engine/strategies.py", line 114, in connect
    return dialect.connect(*cargs, **cparams)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/sqlalchemy/engine/default.py", line 453, in connect
    return self.dbapi.connect(*cargs, **cparams)
  File "/kaiser2/airflow_venv/lib64/python3.6/site-packages/psycopg2/__init__.py", line 126, in connect
    conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
sqlalchemy.exc.OperationalError: (psycopg2.OperationalError) could not connect to server: No such file or directory
    Is the server running locally and accepting
    connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5432"?

(Background on this error at: http://sqlalche.me/e/e3q8)